A bank worker has allegedly stolen more than $4 million from customer accounts over an eight-month period.

The 35-year-old woman, who was employed as a manager of a banking corporation, allegedly stole the funds from customer bank accounts between December 7, 2009 and August 20, 2010.

She accessed the accounts and transferred funds into her personal bank account before transferring the funds into foreign currency.

In total, police allege she defrauded the bank of $4.1 million.

Police were notified about irregularities by the bank and began an investigation.

She went to a police station with her lawyer today, and was charged with two counts of obtaining money by deception and three counts of dishonestly obtaining financial advantage by deception.

The woman was granted strict conditional bail to appear in the Downing Centre Local Court on January 17.

Police said her employment with the banking corporation had been terminated.

Source: AAP, 24 November 2011